Methods for producing α-olefin polymer and hydrogenated α-olefin polymer
a technology of -olefin polymer and -olefin polymer, which is applied in the field of producing -olefin polymer and hydrogenated -olefin polymer, can solve the problems of insufficient viscosity index, pour point, and durability of the resultant -olefin polymer
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production example 1
[Synthesis of (1,1′-dimethylsilylene)(2,2′-dimethylsilylene)-bis(cyclopentadienyl) zirconium dichloride]
[0105]About 13.8 g (600 mmol) of metal Na and 400 ml of dry tetrahydrofuran (THF) were loaded into a 1,000-ml three-necked flask replaced with nitrogen, and the mixture was stirred at 0° C. 5 minutes after that, 1 to 2 ml of cyclopentadiene were dropped to the mixture. Once the generation of hydrogen stopped, 1 to 2 ml of cyclopentadiene were newly added to the resultant mixture. The above operation was repeated until a total of 50 ml (600 mmol) of cyclopentadiene were added. The reaction solution changed from a colorless, transparent one to an incarnadine one. After THF had been removed by distillation under reduced pressure, the resultant crystal was washed with hexane twice and solidified by drying under reduced pressure. As a result, cyclopentadienyl sodium as a pink powder was obtained.
[0106]457 ml of THF were added to 43.0 g (480 mmol) of cyclopentadienyl sodium at 0° C., an...
example 1
[0113]Under a nitrogen atmosphere, 3.4 ml of special grade toluene dehydrated so as to have a water content of 10 ppm or less, 0.2 mmol (2 mmol / ml toluene solution; 0.1 ml) of triisobutylaluminum, 10 μmol (10 μmol / ml toluene solution; 1 ml) of (1,1′-dimethylsilylene)(2,2′-dimethylsilylene)-bis(cyclopentadienyl)zirconium dichloride obtained in Production Example 1, 12 μmol (9.6 mg) of powdery N,N-dimethylanilinium tetrakis(pentafluorophenyl)borate, and 0.5 ml of 1-octene were loaded into a 50-ml Schlenk bottle made of glass, and the mixture was stirred at room temperature for 1 hour. After that, 60 μmol of methanol (MeOH) was added to the resultant and the mixture was stirred at room temperature for 1 hour to prepare a catalyst composition liquid A (Zr concentration: 2 mmol / l, total volume: 5 ml). Here, the term “a catalyst composition liquid” refers to a preparation liquid of catalyst materials.
[0114]An autoclave made of stainless steel having an internal volume of 1 l was sufficien...
example 2
[0115]A catalyst composition liquid B was prepared by the same procedure as that of Example 1 except that the kind of the alcohol was changed to isopropyl alcohol (IPA). The polymerization of the monomers was performed with the catalyst composition liquid B by the same procedure as that of Example 1. The degree of conversion into a copolymer was 88.0 mass %.
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